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Note 22 - Provisions - Reconciliation of Site Restoration Provision (Details) - Provision for decommissioning, restoration and rehabilitation costs [member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement Line Items [Line Items]
Balance at January 1	$ 3,456	$ 2,762
Foreign exchange movement	62	80
Unwinding of discount	25	25
Rehabilitation performed	(22)
- adjusted through profit or loss	58	32
- adjustment capitalised in Property, plant and equipment	218	557
Balance at December 31	$ 3,797	$ 3,456

X

- Definition

The increase (decrease) in other provisions resulting from a change in discount rate adjusted through profit or loss.

+ References

No definition available.

+ Details

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X

- Definition

The increase (decrease) in other provisions resulting from a change in discount rate adjustment capitalised in property, plant, and equipment.

+ References

No definition available.

+ Details

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- References

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X

- Definition

The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The increase in other provisions through adjustments arising from the passage of time. [Refer: Other provisions]

+ References

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- Definition

The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

+ References

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- Definition

The amount used (ie incurrent and charged against the provision) for other provisions. [Refer: Other provisions]

+ References

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